systems rework: buffs, prestige graph, research, modular architecture

Decouples core systems from centralized globals in favor of catalogue-based architecture and data-driven content.

   Key changes:
   - Prestige: node-based buff tech tree, graph panel, progress bar
   - Research: multi-worker system, per-generator research, xp generation
   - Ascension: meta-currency layer via multi-currency prestige resets
   - Buffs: refactored as generator-independent via catalogues
   - UI: currency panel, edge-scrolling camera + zoom, current-goal panel
   - Alchemy Tower: crafting building with recipe/cost system
   - Testing: 7 test suites (ascension, prestige, research, goals)
   - Content: migrated from hardcoded idles/ to gym format (tiny_sword)

test_multi_currency_prestige.gd

@@ -0,0 +1,61 @@
+@tool
+extends Node
+
+func _ready() -> void:
+	if not Engine.is_editor_hint():
+		test_multi_currency_prestige()
+		get_tree().quit()
+
+func test_multi_currency_prestige() -> void:
+	var game_state: LevelGameState = find_child("LevelGameState")
+	var prestige_manager: PrestigeManager = game_state.find_child("PrestigeManager")
+	
+	print("\n=== MULTI-CURRENCY PRESTIGE TEST ===\n")
+	
+	# Check config
+	var config = prestige_manager.get_config()
+	var basis_type = config.get("basis", 0)
+	print("Basis type: %d (expected 3 for ALL_CURRENCIES)" % basis_type)
+	
+	# Check tracked currencies
+	var tracked_ids = prestige_manager.get_tracked_currency_ids()
+	print("Tracked currency IDs: %s" % str(tracked_ids))
+	
+	# Add some test currency amounts
+	var gold = game_state.get_currency_amount_by_id(&"gold")
+	print("Initial gold: %s" % gold.to_string_suffix(2))
+	
+	# Simulate earning currencies
+	game_state.add_currency_by_id(&"gold", BigNumber.from_float(1000.0))
+	game_state.add_currency_by_id(&"wood", BigNumber.from_float(2000.0))
+	game_state.add_currency_by_id(&"food", BigNumber.from_float(1500.0))
+	game_state.add_currency_by_id(&"worker", BigNumber.from_float(500.0))
+	
+	# Check total
+	var total = prestige_manager.get_basis_value_for_display()
+	print("Total currency sum: %s" % total.to_string_suffix(2))
+	
+	# Check threshold
+	var threshold = prestige_manager.get_next_prestige_threshold()
+	print("Prestige threshold: %s" % threshold.to_string_suffix(2))
+	
+	# Check if can prestige
+	var can_prestige = prestige_manager.can_prestige()
+	print("Can prestige: %s" % str(can_prestige))
+	
+	# Check pending gain
+	var pending_gain = prestige_manager.calculate_pending_gain()
+	print("Pending gain: %s" % pending_gain.to_string_suffix(2))
+	
+	# Perform prestige
+	if can_prestige:
+		var result = prestige_manager.perform_prestige()
+		print("Prestige performed: %s" % str(result))
+		
+		var total_prestige = prestige_manager.get_total_prestige()
+		print("Total prestige earned: %s" % total_prestige.to_string_suffix(2))
+		
+		var ascension = game_state.get_currency_amount_by_id(&"ascension")
+		print("Ascension currency: %s" % ascension.to_string_suffix(2))
+	
+	print("\n=== TEST COMPLETE ===\n")